Which value of x must be excluded from the domain of the function, y = 9 / 2(x + 7)?
1 answer:
B) -7 because the dominator must be different by 0.
2(x + 7) ≠ 0 |divide both sides by 2
x + 7 ≠ 0 |subtract 7 from both sides
x ≠ -7
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